Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
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UNDER ANY LOAD
Sometimes when lifting particularly heavy items are scrap or Kyle. And yet arm is clearly not enough. Growths the tool with a piece of ordinary water pipe, as shown in the figure.
AND A HAIRBRUSH,AND RULER
To eliminate the need to carry a ruler or tape measure, apply a linear division on the comb, which is always in my pocket. N. TURULIN, Taganrog
